Interesting Find

During cleaning of my substrate that I removed in going BB, I have noticed that it contained Iron in it. The only source could be from the crushed coral or the red sea [FONT=Arial, Helvetica, sans-serif]Aragonite[/FONT] that I used. After using a magnet found the even some small "rock" stuck to it.

Most of it is so fine it floats up when you spray the substrate with a hose pipe. Must have come with the crushed coral or [FONT=Arial, Helvetica, sans-serif]aragonite and relesed when the stuff degrades. [/FONT]

Experiencing the same with oolite (also bought), I broke a thermometer in the tank and use a magnet to pick up the little iron balls in the tank, had quite a lot of the substrate sticking to the magnet.

I can recall a thread on this subject, I think it was millepora that found a few pieces of iron in his aragonite and actually sent it away for testing, the test results came back all ok and there was nothing to worry about.

I can recall a thread on this subject, I think it was millepora that found a few pieces of iron in his aragonite and actually sent it away for testing, the test results came back all ok and there was nothing to worry about.